SNES

The original release of Super Mario RPG has a highly optimized, and very fun, speedrun that takes you through the bulk of the game's main campaign with very few skips and glitches. The skips and glitches that are used, however, will show you a brand new side of the game that will make you see the game's combat mechanics in a whole new light. 

The SNES and Switch releases of SMRPG are different enough to lend themselves to very fundamentally different speedruns, and you are encouraged to try both if you're already interested in one or the other.

SNES' various speedrun categories, especially any%, are the product of years of hard work by dozens of passionate contributors, but there is always room for improvement from newcomers with fresh ideas. Feel free to dive into this wiki's extensively detailed information about SMRPG speedrunning on the SNES.